baber/WOPTO huggingface dataset:
Patent GB-297589-A (GB)
Title: Improvements in or relating to heat exchange or sterilising apparatus
IPC: A23L3/20
Filed: 1927-11-03
Abstract: 297,589. Seligman, R. Nov. 3, 1927. Plate apparatus.-The plates a of heat-exchanger of the general type set forth in Specifications 223,033 and 225,109 are provided with distributing and collecting grooves b, d which are shallower the. further they extend from the inlet and outlet ports c, e. At the ends of each groove a rib f, g may be arranged the height of which tapers off with the shallowing of the groove. Another feature comprises the provision of the side K of each packing groove h of less height than the other to allow for accommodation of inequalities in packing.
Patent GB-536185-A (GB)
Title: Improvements in or relating to the treatment of gas-scrubbing liquids
IPC: C07C51/44
Filed: 1939-11-04
Abstract: 536,185. Ammonium formate. GAS LIGHT & COKE CO., HUTCHISON, W. K., and DRYDEN, I. G. C. Nov. 4, 1939, No. 29395. [Class 2 (iii)] [Also in Group XII] Scrubbing liquor used cyclically for the washing of crude coal gas (containing hydrogen cyanide) is treated for the recovery of ammonium formate, a portion of the liquor being continuously removed and subjected to steam distillation to remove ammonium compounds which are returned to the circulating liquor, ammonium formate being recovered from the residual portion. The scrubbing liquor contains ammonium hydroxide, ammonium carbonate and/or ammonium hydrosulphide in addition to the formate, and is distilled in a bubble-cap column by counter flow with steam. The hot effluent containing ammonium formate may be concentrated by evaporation to obtain the dry salt. Specification 488,951, [Group XII], is referred to.
Patent GB-408703-A (GB)
Title: Improvements in or relating to electrical wiring connections
IPC: H01R25/14
Filed: 1933-10-19
Abstract: 408,703. Electric-lamp holders; supporting lamps. FRANCE, W., 2, Carfield Place, Meersbrook, and SMITH, L., 139, Archer Road, Millhouses, both in Sheffield. Oct. 19, 1933, No. 29422/32. [Classes 39 (ii) and 75 (iii).] A wiring system comprises a conduit 20 of insulating material, circular in cross-section, having a longitudinal slot 21, and enclosing bare conductors 22, and a co-operating sliding member 31, Fig. 8, that loosely fits the interior of the conduit and carries segmental contacts 32 that may be fitted with flat springs 34 and continuously engage the conductors 22. From the contacts 32 leads pass through a neck 30, extending through the slot 21, to a lamp-holder 42, flex, &c. Free movement of the sliding member may be assisted by the provision of rollers. The conduit is made in lengths, the conductors of one length being connected to those of the next by plugs that enter the hollow conductor, the joint in the conduit being made and covered by a split spring sleeve 26. A locking-nut 41 may secure the sliding member in any position.
Patent GB-689018-A (GB)
Title: Improvements in or relating to cages for laboratory animals
IPC: A01K1/02
Filed: 1951-12-17
Abstract: 689,018. Animal and bird cages. CANADIAN PATENTS & DEVELOPMENT, Ltd. Dec. 17, 1951, No. 29490/51. Class 5(ii) Cages for laboratory animals comprise a perforate floor 11 through which droppings pass to a sloping surface 19 bent backwardly in its lower part 21 whereby gravitation and surface tension guide solid and liquid droppings to separate locations. In the centre of a cylindrical cage, and at the back of a rectangular cage, is a perforate conical or rectangular food holder 16 masked at the lower edge by an imperforate rim 14. Food particles falling through the mesh collect in the space within the rim 14 which extends over the sloping surface 19 beyond the throat 20. In the base, solids fall into the receptacle 28 within the guard 29; liquids run down the surface 21 into the space outside the wall 26 of the receptacle 28.
Patent GB-635170-A (GB)
Title: Improvements in or relating to light-beam indicating systems
IPC: G01D7/06
Filed: 1947-11-05
Abstract: 635,170. Indicating-apparatus. STANDARD TELEPHONES & CABLES, Ltd., and FELDHUSEN, I. V. Nov. 5, 1947, No. 29498. [Class 106 (iv)] [Also in Group XX] A light-beam system for indicating on a screen angular deflections of a rotational system comprises a collimating system including a transparent representation of a measuring scale, a deflecting mirror mounted on the rotational system and rotating with it, and an auxiliary reflector for directing the beam after reflection from the deflecting mirror on to a fixed screen bearing a fiduciary mark. A reflecting galvanometer 5 is mounted in a housing 1 having in its front face 2 a window 3 into which is let a ground-glass screen 4 with a fiduciary line thereon. A light concave mirror 7 is supported on the suspension for the moving system of the galvanometer 5 and rotates in front of a glass window 8. A collimator system comprises a lamp-housing 9 with lamp 10, and a lens tube 12 sliding on the housing 9 and carrying a condenser lens 13. An extension rod 14 attached to the tube 12 carries 'a holder for transparent member 16 on which is engraved a reduced scale. Alternatively, the member 16 may be fixed on the lens tube 12 just in front of the lens. The lamp 10 is connected to a battery or transformer which may be fltted inside the housing 1. Mounted on a pillar 20 is a slidable bracket 21 currying a Mangin reflector 22 preferably attached by a universal joint and facing both mirror 7 and screen 4. The whole collimator system may be mounted on the pillar 20. When correctly adjusted an image of the scale is formed after reflection from mirror 7 just outside the principal focus F of the reflector 22 and a magnified image is projected on to the screen 4. As the instrument mirror 7 rotates, different parts of the scale cross the fiduciary mark, which, to assist in the use of the instrument, may be supplemented by a sub-divided centimetre on either side. A modification is shown in Fig. 2, wherein a mangin reflector 38 is mounted slightly tilted in a lens tube to form a unit with the collimator. The centre of the Mangin reflector 38 is plain to allow the primary beam to fall on the instrument mirror from which it is reflected to strike the silvered part of the reflector 38, from which it is projected to a screen 41. If the mirror 40 is adapted for screen and lamp distances of a metre in normal use. a supplementary convex lens 42 will be required for use with the above unit.
Patent GB-1215565-A (GB)
Title: Improvements in or relating to adhesive compositions
Inventor: O'SULLIVAN DENIS JOSEPH
IPC: C09J4/06
Filed: 1969-06-11
Abstract: 1,215,565. Laminates. INTERCONTINENTAL CHEMICAL CO. Ltd. 11 June, 1969, No. 29506/69. Addition to 1,196,069. Heading B5N. [Also in Divisions C2 and C3] Sheet materials, e.g. rubber and steel, are bonded together using a thickened, stabilized adhesive composition containing (a) at least one ester of 2-cyanoacrylic acid as adhesive, and (b) at least one sultone as stabilizer, the composition being obtained by heating the unthickened adhesive composition, adding the thickener, agitating the composition until the thickener is uniformly dissolved therein and cooling the thus thickened composition.
Patent GB-802044-A (GB)
Title: Improvements in copper base alloys
IPC: C22C9/00
Filed: 1955-10-17
Abstract: Copper alloys of high tensile strength and high resistance to oxidation and stress-corrosion failure have compositions within the following range, in per cent by weight: Ni 3.5-5.0, Si 0.7-2.0, Al 3.0-10.0, Fe 3.5-5.0, Cu the balance.
Patent GB-471016-A (GB)
Title: Improvements in or relating to photographic exposure meters combined with polarisation filters
IPC: G01J1/42
Filed: 1936-10-30
Abstract: 471,016. Photo - electric exposure meters; photographic lens fittings. ZEISS IKON AKT.-GES. Oct. 30, 1936, Nos. 29574 and 29575. Convention dates, Nov. 26, 1935 and April 18, 1936. [Class 98 (i)] [Also in Group XL] A polarizing filter of the kind which may be angularly adjusted to remove disturbing reflections from the field of view is mounted in or in front of the view opening of a photoelectric exposure meter. A single filter may cover both openings, or separate filters coupled together for simultaneous adjustment may cover each. The filter or filters may be carried by detachable mountings so that they may be transferred in correct orientation to the view finder or objective of a photographic camera. When the filter or filters cover both the view and cell openings, they may be associated with one or more colour filters. As shown in Fig. 2, the foil filter 7 is rotatably mounted in front of the view opening 3, 4 of a meter 1, a scale on the front of the meter indicating the angular adjustment. A second filter may be rotatably mounted in the cell opening of the meter, the two filters being coupled by toothed gearing actuated by a scaled adjusting wheel ; and in this form the two filters may be mounted in the meter or in a detachable cap fitting over the front of the meter. In a further modification, a single filter 18, Fig. 9, covering both openings is mounted in a holder 19 which may be fitted on a cap 20 for attachment to the exposure meter, or may be mounted directly upon the objective or view finder of a camera.
Patent GB-776657-A (GB)
Title: Improvements in and relating to servo-systems
Inventor: HUNTER DESMOND
IPC: G05D3/12
Filed: 1953-10-28
Abstract: 776,657. Electric position control systems. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 20, 1954 [Oct. 28, 1953], No. 29816/53. Class 40 (1). In a remote control system, the angular position of a shaft is controlled by driving it from a constantly rotating shaft through a substantially instantaneously operated clutch under control of the usual error signal, so that the torque available from the controlled shaft is constant during movement thereof. A clutch as described in Specification 656,921, [Group XIX], may be used, in which case should the error signal exceed a permissible value it produces pulses in a generator 2 or 2<SP>1</SP>, according to the sense of the error signal, at a recurrence rate corresponding to the error signal magnitude, these pulses engaging the associated clutch 3 for the duration thereof so that the controlled shaft 4, driven through a differential 5 from the two clutch outputs, runs at an average rate and in a direction corresponding to the error signal. An over-riding control may effect continuous engagement of the clutch.
Patent GB-935151-A (GB)
Title: Improvements in or relating to electron beam wave generators
Inventor: ASH ERIC ALBERT
IPC: H01J25/34
Filed: 1960-08-30
Abstract: 935,151. Electron beam apparatus. STANDARD TELEPHONES & CABLES Ltd. Aug. 30, 1960, No. 29817/60. Drawings to Specification. Class 39 (1). An electron beam harmonic generator comprises means for exciting fast mode oscillations at or at one-half of the cyclotron frequency in an unloaded hollow pipe waveguide along the axis of which an electron beam is projected in the presence of an axial magnetic field and a cavity resonator tuned to a harmonic of the cyclotron frequency and downstream of the waveguide. The beam is annular or solid and is subjected to an axial magnetic field in at least the waveguide and preferably also in the resonator. The gun may be magnetically shielded and offset from the axis, Fig. 2 (not shown), in which case the magnetic field also extends from the gun to the waveguide. The waveguide supports the TE 11  mode (circular waveguide excited at # c ) or the TE 21  mode (rectangular waveguide excited at # c /2). The waveguide and cavity resonator may be an integral block of copper forming part of the tube envelope.
Patent GB-720399-A (GB)
Title: Improvements in or relating to speed measuring devices
IPC: G01P3/40
Filed: 1951-12-20
Abstract: 720,399. Frequency measurements. SUBMERGED LOG CO., Ltd., and SWANNELL, A. C. Dec. 16, 1952 [Dec. 20, 1951], No. 29882/51. Class 37. [Also in Groups XIX and XL (b)] In a stroboscopic device for indicating the frequency of a single-phase voltage induced in a pick-up, or for indicating the speed of a rotating device producing the voltage, the singlephase voltage is converted to polyphase and drives a polyphase synchronous motor which rotates an indicator member past a fixed scale, the indicator member being illuminated periodically by a flash tube a predetermined delay time atter a putse derived trom one of the motor phases has been passed thereto. As shown, for measuring the speed of a ship's log, a bar magnet a rotating with the impeller induces an alternating E.M.F. in a stationary coil C of magnitude and frequency proportional to the ship's speed. This voltage is amplified at 1 and squared at 2. The output from 2 is differentiated, the resultant negative pulses, only, triggering a bi-stable multivibrator 3 connected as a " scale of two " circuit. Two square wave outputs at half the input frequency and in phase opposition are taken from the anodes of the multivibrator 3, and applied, respectively, to further similar "scale of two " frequency dividers 4, 5, from each of which one output is taken, these outputs being in phase quadrature. These quadrature outputs are passed through respective cathode follower buffer stages 6, and respective power amplifiers 7, 8, which convert the rectangular waves into flat-topped triangular form, to the two phases e-f, g-h of a synchronous motor t having a permanent magnet rotor d which runs synchronously with the impeller magnet a and may operate a revolution counter q, Fig. 2. The rotor d, Fig. 2, carries a disc i slotted radially at j, and rotatable within a fixed concentric scale k. The output from one of the quadrature phases is taken from the buffer valve and fed to a timing circuit 9, 10, 11 which produces an output pulse delayed a predetermined time relative to the zero point of the respective phase. The delayed output pulse operates a flash tube 12 which illuminates the radial slot pointer and the scale k to indicate the speed stroboscopically. The pick-up, a-c, may use a four-pole magnet or a slotted disc may be used in lieu in conjunction with a photo-cell.
Patent GB-324058-A (GB)
Title: Improvements in or relating to the printing of photographs and apparatus therefor
IPC: G03B27/32
Filed: 1928-10-16
Abstract: 324,058. Graseby, R. C. Oct. 16, 1928. Enlarging, copying, and reducing.-The negative, while still wet from developing, is immersed in liquid, and light is transmitted through the liquid and negative to the sensitized surface, which may be either inside or outside the liquid. When printing by projection, a slide is provided between the light source 6 and the lens, and is adapted to receive a narrow tank having parallel plane walls, either both transparent, or one of translucent material, such as flashed opal glass, and the other transparent. The tank and a reservoir 15 to which it is connected contain water. A frame having a handle 25, and adapted to receive continuous lengths of films exposed in a number of sections, is inserted into the tank through an opening 8 in the enlarging apparatus.
Patent GB-537259-A (GB)
Title: Improvements in straight bar knitting machines
IPC: D04B15/64
Filed: 1939-11-13
Abstract: 537,259. Knitting-machines. COTTON, Ltd., W., WILDERS, G., and MACDONALD, W. G. Nov. 13, 1939, No. 29924. [Class 74 (ii)] The draw mechanism of a straight-bar machine comprises the draw cam 10, a member 12 reciprocated by the cam 10 and guided for movement in a straight line, a second reciprocable member 24 moving in a path parallel to that of the member 12, a draw lever 18 for transmitting the movement of the member 12 to the member 24 and. connected to each of the members 12, 24 by a cross-head device. Each cross-head device consists of a slide block 21 projecting from the draw lever and received and guided in a vertical slot 23 in the member 12 or 24. The rubbing faces of the block 21 or the antifriction material. The member 24 is connected to the slur cock tie bar or to a thread slot 23 are provided with brasses or other carrier rod, or to both. One draw mechanism may be provided for driving the slur cock or cocks, a second may be arranged to drive the main thread carrier or carriers and a third mechanism may be provided for a plating- thread carrier or carriers.
Patent GB-1194915-A (GB)
Title: Rolling oil recovery process
IPC: C10M175/04
Filed: 1967-06-28
Abstract: 1,194,915. Recovering rolling oil. NEW CANADIAN PROCESSES Ltd. 28 June, 1967 [5 July, 1966], No. 29955/67. Headings C5C and C5E. [Also in Division C1] Rolling oil sludge, an emulsion of oil, water and iron, is agitated at 110-215 F. with a mineral acid in an amount of 5% to that required to react with the theoretical iron content until there is no settling into layers. The liquid is then passed between the same range of temperatures through a porous filter and the effluent from the filter is physically separated into an oil portion and an aqueous portion. The fatty oils recovered by this process may be reused as rolling oil-they have a higher free fatty acid content than fresh oil. The process is also applicable to mineral-oil based rolling oils.
Patent GB-922240-A (GB)
Title: Hospital bedsteads
Inventor: ADAMS ENOCH
IPC: A61G7/005
Filed: 1960-08-31
Abstract: 922,240. Hospital beds. HOSKINS & SEWELL Ltd. Aug. 17, 1961 [Aug. 31, 1960], No. 29974/60. Class 52 (2). A bedstead comprises a base frame 3, a mattress frame 8, and two pairs of screw-jacks 7 pivotally interconnecting the frames 3, 8 whereby the height and angular setting of the mattress frame relative to the base frame can be adjusted. Each side member of the base frame 3 has two depending arms 5 between the lower ends of which a pair of cross members 6 extend. The cross members 6 are angularly movable about their axes and have secured near their opposite ends a pair of screw-jacks 7. The complementary parts of the jacks are pivotally connected to the mattress frame 8. The actuating mechanisms of each pair of jacks are interconnected by a rod 9 so as to be operable by a common handle attached to a part 10 of the rod. When the frames 3, 8 are parallel the four jacks will be substantially parallel. A pair of links 11 are provided to prevent the mattress frame 8 from collapsing on to the base frame 3.
Patent GB-792820-A (GB)
Title: Improvements in or relating to method of incorporating water soluble salts in propellant powder grains
Inventor: MULQUEENY THOMAS J
IPC: C06B21/00
Filed: 1955-10-20
Abstract: 792,820. Globular propellants. OLIN MATHIESON CHEMICAL CORPORATION. Oct. 20, 1955, No. 29982/55. Class 9(2) In manufacturing propellant powder grains wherein globules of a lacquer of smokeless powder base and waterimmiscible solvent are hardened while suspended in an aqueous liquor, water-soluble salts are incorporated by uniformly distributing the salt particles in lacquer and introducing the lacquer into the liquor. A lacquer is prepared from 20 per cent or more of the required nitrocellulose, potassium nitrate, and ethyl acetate. The lacquer is introduced into a still containing water at 55 ‹C. with sodium sulphate dissolved therein. Where not all the nitrocellulose is in the lacquer, further fibrous nitrocellulose is added to and dissolved in the presence of the suspending liquor. The temperature of the contents of the still is increased to 70‹C. with agitation until the nitrocellulose has dissolved. The lacquer is disintegrated into particles as in Specification 473,057 and, when the desired degree of disintegration has been achieved, the speed of agitation is reduced to such as will maintain the suspension, until the particles are rounded, when the temperature is increased to not more than 99‹C., with or without vacuum application. to distil off the solvent leaving hardened grams.
Patent GB-952556-A (GB)
Title: Method of making thermoplastic tubular container
Inventor: DOWNS MYRON HERBERT
IPC: B29C43/18
Filed: 1962-08-03
Abstract: 952,556. Moulding tubular containers; seaming non-metallic sheet material. THATCHER GLASS MANUFACTURING CO. Inc. Aug. 3, 1962, No. 30032/62. Headings B5A and B5K. [Also in Division B8] A thermoplastic tubular container is formed by introducing a thermoplastic tube 7 into a metal collar 5 having a cutting edge 6 and forcing the tube and collar down on to a molten sheet or ribbon 8 of plastics, e.g. polyethylene, thereby cutting out a disc end 10 and forcing it up within the tube to which it is welded by reason of the latent heat in the disc. The sheet 8 lies on a steel plate 9, which may, alternatively, be of laminated plastics. To ensure that the disc 10 remains flat a mandrel 13, or air under pressure is used inside the tube. In a modification. Fig. 3, a reciprocable mandrel 16 and mould 14 may form the welded end to a required shape before the disc 10 cools. Again, Figs. 4 and 5 (not shown), a hollow mandrel may support the inner wall of the tube and within this mandrel a spring-loaded inner mandrel reciprocates to form the container; in this embodiment the invention is applied to forming the upper end of a container having a screw-threaded neck. The stages of making the container may be carried out at successive stations, using a rotary table or conveyer.
Patent GB-192516-A (GB)
Title: Improvements in and connected with pens and pencils
IPC: B43K5/17
Filed: 1921-11-10
Abstract: 192,516. Hammett, R. J. Nov. 10, 1021. Pencil and like point-protectors. - A pen or pencil is held in a case fitted with a pivoted cap or point-protector which is provided with a fingerpiece for operation by the thumb or finger of the hand holding the case to allow the pen or pencil to slide in the case and project the point. As shown in the Figure, the case 2 containing a reservoir pen 1 is provided with a pivoted cap 3 normally held closed by a spring coiled round the hinge-pin 6. and adapted to be opened by pressure on an extension 7. A cushion 4 is attached to the cap 3 to prevent injury to the point, and the pen is prevented from falling out of the case by a stop 9. When projected, the pen is held in writing position by the engagement of the edge of the cap in a recess 8 in the pen barrel. The rear end 10 of the case, which is also provided with a cushion 11, is made. detachable to enable the pen to be removed. The pen may be prevented from rotating in the case by the engagement of a pin on the case with a longitudinal groove in the pen barrel. The case may be reduced in length so that it only extends over a portion of the pen.
Patent GB-1292243-A (GB)
Title: Mixture composition monitor
Inventor: BULLOCK MICHAEL KERMITT
IPC: G01G1/00
Filed: 1971-06-28
Abstract: 1292243 Weighing apparatus INTERNATIONAL BUSINESS MACHINES CORP 28 June 1971 [28 July 1970] 30105/71 Heading G1W [Also in Divisions G2-3] Electro-photographic developer comprising toner and carrier particles is fed through a tube 40 at such a rate that the tube is kept full of developer, and the weight of the tube of developer is used to monitor the rotation proportions of toner and carrier. As shown, tube 40 is pivoted at 63 by a system of wires Figs. 4 and 6 (not shown) and has a counterbalance arm bearing a counterweight 46. As toner is depleted the weight of the tube increases, the tube pivots downwards and a magnet 47 operates a toner replenishing switch 45. In Fig. 8 (not shown) the tube is pivoted on jewelled bearings. Arrangements are described for adjusting the biasing torque applied to the balancing system to select the density at which the developer must be held.